Clarification in Problem

#1

Why {0-0} {0-1} {0-0} {1-0}
1st 2 output configuratiuon contaion single one’s
in 2*2 board

As we have to place N knight but it contaion only 1 one.

#2

so basically is size of board is n*n then we have to place n knights on the board…
for example is n = 2
{0-0} {0-1}
{0-0} {1-0}
{0-0} {1-1}
{0-1} {1-0}
{0-1} {1-1}
{1-0} {1-1}
6
these are the possible ans… so total ways is 6

#3

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